Getting Error - "Object reference not set to an instance of an object".

Question

Hi, In my C# application, i am getting an error - "Object reference not set to an instance of an object.". This application is running round the clock(stock appln) and i have just enabled additional logging. This error is happening for a particular sequence of events. I suspect at the end of the day, when i colse and open objects/file streams/writers, i encounter this. Any idea on the curcumstances under which this normally hapens? I believe you guys might have come across this. I will get back to you with more info after checking the log( need to wait one day for that error). Thanks in advance for the help. Regards, Peri